Environment

Population and the environment

Our numbers have a huge effect on our natural environment. The more of us there are, the bigger the impact on nature. Human population growth is a key driver of biodiversity loss, resource depletion, deforestation, climate emissions and pollution.

In the 1970s, Population Matters Patron Paul Ehrlich and his colleague John Holdren developed an equation to describe our impact on the environment:

I = P x A x T

Where "I" is impact, "P" is population, "A" is affluence and "T" is technology. The "IPAT" equation shows that our numbers, how we live, and the technology we use all have an effect on our finite environment.

See our latest news stories and blog posts about the environment below.

Endgame 2050 Live Panel Discussion

Endgame 2050 poster
4 February 2021

​The important new documentary ENDGAME 2050 provides a sobering glimpse into the bleak future we are headed towards unless we embrace the transformative change required to turn the tide on our biggest environmental crises. Join us as for a virtual live-screening of the population segment of the film, followed by a panel discussion with leading experts!

5 May 2021

PM supporters take action on UK aid cuts

The biodiversity crisis: Why population matters

A fully referenced briefing outlining the relationship between population and biodiversity loss, and how ethical and empowering population solutions can help us tackle the crisis.

Jonathon and Stella
22 April 2021

Jonathon Porritt: Still hot on the campaign trail

Kate Strong
16 April 2021

Choice Champions: breaking records, smashing barriers

Playing children
7 April 2021

Why protecting child health means ending population growth

Edinburgh
31 March 2021

Scotland's not-so-sustainable population policy

Baby
30 March 2021

‘Baby drought’? Let’s focus on the real COVID-19 crises

22 March 2021

Troubled Waters: Population growth and climate change

The climate crisis: Why population matters

A fully referenced briefing outlining the relationship between population and climate change, and how ethical and empowering population solutions can help us tackle the crisis.